This is a great idea, and there is a market for this, as anyone with a baby will tell you. But have you done any customer development? As others have mentioned, you have a lot of competition.
First you have relatives. They buy lots of new clothes for you. Then you have consignment shops for lots of basic items, which as a new parent, you are suddenly very aware of. Finally, you have the parents themselves, who can usually afford to splurge on a nice outfit here or there, after the bulk of clothing's been supplied by #1 and #2.
I just don't see a burning need here that will get you across the chasm.
First you have relatives. They buy lots of new clothes for you. Then you have consignment shops for lots of basic items, which as a new parent, you are suddenly very aware of. Finally, you have the parents themselves, who can usually afford to splurge on a nice outfit here or there, after the bulk of clothing's been supplied by #1 and #2.
I just don't see a burning need here that will get you across the chasm.